Wireless sensor is one of the research hotspots in the current information field. It can be used for signal acquisition, processing and transmission in special environments. Wireless sensor network is a new kind of information acquisition and processing technology, which has been more and more widely used in real life. Next Xiaobian introduces wireless sensor applications and sensor types. Wireless sensor applications 1. Application in the military field In the military field, because of its dense and random distribution, WSN is very suitable for use in harsh battlefield environments. The use of WSN enables the monitoring of troops and equipment in enemy areas, real-time monitoring of battlefield conditions, positioning of targets, monitoring of nuclear attacks or biochemical attacks. 2. Auxiliary agricultural production WSN is particularly suitable for production and scientific research in the following areas. For example, greenhouse greenhouse planting and soil temperature, humidity, light monitoring, analysis and measurement of precious economic crop growth laws, grape quality breeding and production, etc., can greatly help rural development and farmers' income increase. The use of WSN to build an automatic agricultural environment monitoring system, using a set of network equipment to complete the data collection and environmental control of wind, light, water, electricity, heat, and pesticides, can effectively increase the degree of agricultural intensive production, improve the scientific production of agricultural production and planting . 3. Ecological monitoring and disaster warning WSN can be widely used in ecological environment monitoring, biological population research, meteorology and geography research, flood and fire monitoring. Environmental monitoring provides a scientific decision-making basis for environmental protection and is the basis of ecological protection. Arranging WSNs in the wild or in areas that are not suitable for human monitoring can be monitored uninterruptedly for long periods of time to provide real-time data for the protection and research of the ecological environment. Specific applications include: conducting studies on endangered populations by tracking the habitat and foraging habits of rare birds and other animals; arranging sensor nodes along rivers and monitoring the status of water levels and water resources at any time; natural disasters such as mudslides and landslides. Arrangements of nodes in areas that are prone to occur can issue disaster warnings in advance and timely take corresponding disaster-resilient measures; large numbers of nodes can be deployed in key forest areas to monitor internal fire conditions at any time. Once a fire is discovered, an alarm can be issued immediately and a specific location can be given. The size of the current fire; can be deployed in areas where earthquakes, floods, and other disasters occur, remote mountain areas, or remote wild areas, for temporary emergency communications. 4, infrastructure monitoring system WSN technology has a positive role in the safe construction of large-scale projects and the monitoring of the safety status of buildings. By arranging the sensor nodes, the status of buildings, bridges, and other buildings can be observed in an accurate and timely manner, dangerous situations can be discovered in time, and maintenance can be performed in time to avoid serious consequences. 5, the application of industrial fields In terms of industrial safety, sensor network technology can be used in hazardous working environments. For example, sensor nodes in coal mines, oil drilling, nuclear power plants, and assembly lines can monitor the working environment's safety at any time and provide guarantees for the safety of workers. In addition, the sensor node can also replace part of the staff to perform tasks in a dangerous environment, not only reducing the degree of danger, but also improving the accuracy and speed of response to dangerous situations. 6. Safe and smooth flow in intelligent transportation The Intelligent Transportation System (ITS) is a new type of transportation system developed on the basis of the traditional transportation system. It integrates information, communication, control and computer technologies, and other modern communication technologies into the transportation sector, and it will be “people-vehicle-roadâ€. - The environment is organically combined. Adding a wireless sensor network technology to existing transportation facilities will fundamentally alleviate the problems that plagued modern transportation such as safety, patency, energy saving and environmental protection, and at the same time improve the efficiency of transportation work. Therefore, applying wireless sensor network technology to intelligent transportation systems has become a research hotspot in recent years. 7, there is a great deal in the medical system In recent years, wireless sensor networks have had many applications in medical systems and health care, such as monitoring various physiological data of the human body, tracking and monitoring the actions of doctors and patients in hospitals, and drug management in hospitals. If special purpose sensor nodes, such as heart rate and blood pressure monitoring devices, are installed on the inpatient, the doctor can keep track of the patient's condition at any time and he can quickly rescue him or her if an abnormal condition is found. 8, to promote more intelligent information appliances The gradual popularization of wireless sensor networks has promoted the rapid development of information home appliances and network technologies. The main equipment in home networks has been expanded from a single machine to a variety of household electrical appliances. The intelligent home network control nodes based on wireless sensor networks are internal and external networks. The connection and connection of information appliances and devices within the internal network provides a basic platform. sensor type 1, vibration sensor The maximum sampling rate for each node can be set to 4 KHz, and each channel is equipped with an anti-aliasing low-pass filter. The collected data can be transmitted wirelessly to the computer in real time, or can be stored in the node's built-in 2M data memory, ensuring the accuracy of the collected data. The effective outdoor communication distance can reach 300m, the power consumption of the node is only 30mA, use the built-in rechargeable battery, can measure continuously for 18 hours. If you choose a node with a USB interface, you can either charge the node via the USB interface or you can quickly download the data from the memory to your computer. 2, strain sensor The node is compact in structure and compact in size. It is composed of a power module, an acquisition and processing module, and a wireless transceiver module, and is packaged in a PPS plastic housing. Each channel of the node has built-in independent high-precision 120-1000Ω bridge circuit resistance and amplification conditioning circuit, which can be conveniently switched by software to select 1/4 bridge, half bridge, full bridge measurement mode, compatible with various types of bridge sensors Such as strain, load, torque, displacement, acceleration, pressure, temperature, etc. The node supports both 2-wire and 3-wire input methods. The bridge is automatically trimmed and can also be stored in the node's built-in 2M data memory. Effective outdoor communication distance up to 300 m. Can measure more than a dozen hours in a row. 3, torque sensor The nodes are compact, compact and packaged in a resin case. Each channel has a built-in high-precision 120-1000Ω bridge resistor and amplification conditioning circuit. The bridge is automatically trimmed. The node's air transmission rate can reach 250K BPS, effective real-time data transmission rate can reach 4K SPS, and effective indoor communication distance can reach 100 meters. The node is designed with dedicated power management software and hardware. In the case of real-time uninterrupted transmission, the node consumes only 25 mA. Using an ordinary 9-volt battery, it can measure tens of hours continuously. For long-term monitoring applications, the torque value is sent once every 5 minutes. The battery does not need to be replaced for several years, which greatly improves the maintenance-free performance of the system. Editor's summary: The wireless sensor application and sensor types are introduced here, and we hope to help everyone. If you want to know more about yourself, you can follow the information on this site. High Temperature Pressure Sensor Switch Sensor Load Cell Level Sensor Liquid Sensor Wireless Sensor Application GUANGDONG LAVIUS LIGHTING CO., LTD. , https://www.laviuslighting.com
